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Electrical Applications 2 by David W. Tyler

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DC machines 81
Le Ft hand SeCond finger
Figure 6.3 Fleming's left hand rule
For motors
The relationship between the direction of the force, current and
magnetic field has been determined by experiment and a convenient
way of remembering this is by the use of Fleming's left hand rule.
In Figure 6.3 the leFt hand relates current and magnetic field to
Force and force is produced by an electric motor to drive its load.
The thuMb indicates the direction of the force and hence Motion
The First finger represents the direction of the Field
The seCond finger represents the directio